How to Concatenate two matrix's each elements ?

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Lenin chakravarthy Kuppannan
编辑： Stephen23 2016-5-20
Hi, I am trying to concatenate two matrix's each elements, like following,
A = [ a b c; d e f; g h i] and B = [ 1 2 3; 4 5 6; 7 8 9]
Now i need to create a new matrix like c = [ a1 b2 c3; d4 e5 f6; g7 h8 i9]
Note: here, "a1" is not multiplying 'a' and '1' ( != a * 1). Just concatenating the two elements.
Pls help to do it.
Have a nice day.
- Lenin

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Elias Gule
Elias Gule 2016-5-17
Let's try:
syms a b c d e f g h i % initialize symbols
A = [a b c;d e f;g h i];
B = [1 2 3;4 5 6;7 8 9];
sz = size(A);
C = cell(sz); % initialize a cell array to hold the concatenated elements
for row = 1 : sz(1)
for col = 1 : sz(2)
a = A(row,col);
b = B(row,col);
C{row,col} = strcat(a,num2str(b)); % convert B(i,j) to string for concatenation
end
end
  2 个评论
Lenin chakravarthy Kuppannan
Lenin chakravarthy Kuppannan 2016-5-18
编辑：Lenin chakravarthy Kuppannan 2016-5-18
Hi, Thank you for your help. your program works very well. I modified your program little to meet my objective.
My objective is to create a new matrix num_mat = [111 222 333; 444 555 666; 777 888 999] by concatenating the following matrix A = [1 2 3; 4 5 6; 7 8 9] and B = [11 22 33; 44 55 66; 77 88 99].
Note: A,B & num_mat matrix are numbers.
Here the output 'num_mat's elements need to be numbers, not strings.
So i wrote a program with your program as base as following, kindly see the attachment.
- Kindly hep me to solve this problem.
Have a good day.
- Lenin
Elias Gule
Elias Gule 2016-5-20
Ola!
Thanks, your example matrices just made my life easy. Try the following code:
C = arrayfun(@(x,y) str2double(strcat(num2str(x),num2str(y))),A,B)
where A and B are numerical matrices of the same size.

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更多回答（1 个）

Andrei Bobrov
Andrei Bobrov 2016-5-17
编辑：Andrei Bobrov 2016-5-18
A = [ 1 2 3; 4 5 6; 7 8 9];
B = [ 1 2 3; 4 5 6; 7 8 9];
str2double(strcat(arrayfun(@num2str,A,'un',0),arrayfun(@num2str,B,'un',0)))

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